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Year : 2014  |  Volume : 62  |  Issue : 11  |  Page : 1094-1095

Preoperative corneal astigmatism among adult patients with cataract in Northern Nigeria

1 Department of Ophthalmology, Aminu Kano Teaching Hospital, Kano, Nigeria
2 Department of Optometry, Makkah Specialist Eye Hospital, Albasar Foundation, Kano, Nigeria

Correspondence Address:
Mohammed Isyaku
Department of ophthalmology, Aminu Kano Teaching Hospital, Kano
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0301-4738.146751

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The prevalence and nature of corneal astigmatism among patients with cataract has not been well-documented in the resident African population. This retrospective study was undertaken to investigate preexisting corneal astigmatism in adult patients with cataract. We analyzed keratometric readings acquired by manual Javal-Schiotz keratometry before surgery between January 1, 2011 and December 31, 2011. There were 3,169 patients (3286 eyes) aged between 16 and 110 years involved with a Male to female ratio of 1.4:1. Mean keratometry in diopters was K1 = 43.99 and K2 = 43.80. Mean corneal astigmatism was 1.16 diopter and a majority (45.92%) of eyes had astigmatism between 1.00 and 1.99 diopters. Two-thirds of the eyes (66.9%) in this study had preoperative corneal astigmatism equal to or above 1.00 diopter. Findings will help local cataract surgeons to estimate the potential demand for toric intraocular lenses.

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